| 一种提高SDH频带利用率的新方法 |
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| 引用本文： | 沙燕萍,王瀚晟.一种提高SDH频带利用率的新方法[J].数字通信,1998,25(4):47-48,61. |
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| 作者姓名： | 沙燕萍 王瀚晟 |
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| 作者单位： | 清华大学电子工程系 |
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| 摘 要： | 提出了一种提高ＳＤＨ网络频带利用率的方法，即三次群信号不是直接按照ＩＴＵ－ＴＧ，７０７建议映射是ＳＴＭ－１信号，而是将４个三次群信号复用为准四次后再进入ＳＴＭ－１信号，与ＩＴＵ－Ｔ规定的复用映射结构相比使频带利用率提高了３３％，并分析了此系统的性能。
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| 关 键 词： | 同步数字序列 准同步数字序列 准四次群 PDH SDH |
A Method of Increasing SDH Waveband Utilization Ratio |
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| Sha Yanping,Wang Hansheng,Zeng Lieguang.A Method of Increasing SDH Waveband Utilization Ratio[J].Digital Communication,1998,25(4):47-48,61. |
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| Authors: | Sha Yanping Wang Hansheng Zeng Lieguang |
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| Affiliation: | Sha Yanping Wang Hansheng Zeng Lieguang |
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| Abstract: | This paper introduces a new method of increasing SDH waveband utilization ratio when PDH 3rd order signals are involved. Different from ITU T G.707 Recommendation but compatible with it, 4 PDH 3rd order signals are multiplexed into one pseudo 4th order signals before ultimately mapping into STM 1. Compared with the structure recommended by ITU T,the SDH waveband utilization ratio can increase by 33%, and the characteristics of this system are analyzed. |
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| Keywords: | SDH PDH pseudo 4th order |
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